Measuring and filtering device of pressure gauge

Abstract

The utility model discloses a pressure gauge measuring and filtering device which comprises a barometer and a filter, the lower end of the barometer is connected with two gate valves, the lower ends of the gate valves are provided with a first flange, the lower surface of the first flange is provided with a second flange, and the filter is installed between the first flange and the second flange. The lower surface of the second flange is provided with ball valves, the lower ends of the ball valves are connected with corrugated pipes, gas is controlled to enter the barometer through the two ball valves, dust particles in the gas can be filtered out through the filter, the dust particles are prevented from damaging the pressure meter, it is ensured that display of the pressure meter is more accurate, and the failure rate of the pressure meter is reduced; the maintenance and replacement period of the pressure gauge can be prolonged, whether the filter needs to be cleaned or not can be judged by switching the opening and closing of the two ball valves in combination with the numerical value change of the pressure gauge, and when the filter is replaced, the gate valve and the ball valve on the same side are closed without affecting the use of the barometer.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure gauges, in particular to a pressure gauge measuring filter device. Background Art

[0002] The silo type pneumatic conveying pump uses positive pressure pneumatic conveying to convey powdered materials. It is widely used in the transportation of fly ash, cement, cement raw material, mineral powder and other materials in power plants. In order to detect the pressure inside the pipeline, a pressure gauge needs to be installed on the pipeline.

[0003] In the related art, when ordinary pressure gauges are used for such mixture pressure, ash will enter the pressure gauge, and the ash particles may block the internal channel of the pressure gauge, resulting in inaccurate measurement or complete failure. If the ash contains corrosive substances, it may cause corrosion to the internal metal parts of the pressure gauge. This corrosion will damage the structural integrity of the parts, causing leakage, failure or unstable readings. When some pressure gauges with filtering functions are used, it is difficult to determine whether the pressure gauge detection after cleaning is accurate. Utility Model Content

[0004] The utility model aims to provide a pressure gauge measuring filter device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a pressure gauge measuring filter device, comprising a pressure gauge, two gate valves are connected to the lower end of the pressure gauge, a first flange is installed at the lower end of the gate valve, and a second flange is installed on the lower surface of the first flange;

[0006] A filter, the filter is installed between the first flange and the second flange, a ball valve is installed on the lower surface of the second flange, and a bellows is connected to the lower end of the ball valve;

[0007] The filter can prevent particles from entering the barometer, ensuring that the barometer displays accurately and has a longer service life.

[0008] Furthermore, a sealing groove is provided on the surface of the second flange, and the filter is placed inside the sealing groove. A sealing ring is provided on the lower surface of the first flange, and the sealing ring is placed inside the sealing groove. The filter is clamped by the sealing ring and the sealing groove to ensure the sealing of the connection between the first flange and the second flange and avoid leakage.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] (1) The filter can filter out dust particles in the gas to prevent dust particles from damaging the pressure gauge, ensuring that the pressure gauge displays more accurately, reducing the failure rate of the pressure gauge, and extending the maintenance and replacement cycle of the pressure gauge.

[0011] (2) Two ball valves are used to control the gas entering the pressure gauge. By switching the two ball valves on and off and combining the value changes on the pressure gauge, it can be determined whether the filter needs to be cleaned. When replacing the filter, closing the gate valve and ball valve on the same side will not affect the use of the pressure gauge. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of the utility model as a whole;

[0013] Figure 2 It is a cross-sectional view of the first flange and the second flange of the utility model.

[0014] In the figure: 1. pressure gauge; 2. first three-way valve; 3. gate valve; 4. elbow; 5. first flange; 6. second flange; 7. ball valve; 8. second three-way valve; 9. sealing ring; 10. filter; 11. sealing groove; 12. bellows. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] Example:

[0017] See also Figure 1-2 The utility model provides a technical solution: a pressure gauge measuring filter device, comprising a pressure gauge 1, two gate valves 3 are connected to the lower end of the pressure gauge 1, a first flange 5 is installed at the lower end of the gate valve 3, and a second flange 6 is installed on the lower surface of the first flange 5;

[0018] The use of the gate valve 3 can prevent gas leakage inside the barometer 1, facilitate replacement of the filter 10, and will not affect the normal operation of the barometer 1;

[0019] A filter 10, wherein the filter 10 is installed between the first flange 5 and the second flange 6, a ball valve 7 is installed on the lower surface of the second flange 6, a bellows 12 is connected to the lower end of the ball valve 7, and the bellows 12 can be bent to separate the first flange 5 and the second flange 6, so as to facilitate the removal of the filter 10;

[0020] The filter 10 may be a canvas plate, the characteristic of which is that air can pass through the canvas plate, while dust particles will be blocked, thereby removing dust in the air and protecting the pressure gauge.

[0021] In this embodiment, if Figure 1As shown, the pressure gauge 1 is connected to a first tee 2, two gate valves 3 are connected to the first tee 2, a second tee 8 is connected between two bellows 12, the first tee 2 provides two air inlet channels for the pressure gauge, and the second tee 8 is connected to a pipeline for transporting materials, and it is sufficient to provide a joint on the pipeline for transporting materials.

[0022] In this embodiment, if Figure 1 As shown, the gate valve 3 is connected to a bend pipe 4, and the bend pipe 4 is fixedly connected to the first flange 5. The bend pipe 4 helps to change the layout of various parts, adjust the shape of the filter device, and reduce the occupied space of the filter device.

[0023] In this embodiment, if Figure 2 As shown, a sealing groove 11 is provided on the surface of the second flange 6, and the filter 10 is placed inside the sealing groove 11. A sealing ring 9 is provided on the lower surface of the first flange 5, and the sealing ring 9 is placed inside the sealing groove 11. The first flange 5 and the second flange 6 are fixed with screws and nuts, and it is ensured that the sealing ring 9 and the sealing groove 11 can clamp the filter 10, so that the sealing effect is better.

[0024] Specifically, when in use, use the second three-way valve 8 to connect with the pipeline for transporting materials, close the ball valve 7 and the gate valve 3 on the same side, ensure that the gas inside the pipeline can only enter the barometer 1 through the filter 10 on one side, and ensure that the other filter 10 is in a standby state. Before replacing the filter 10, record the value of the barometer 1, and then use the spare filter 10 to allow the gas to enter the barometer 1 and read the value, and compare the previous values. If the two values ​​are the same, it means that the filter 10 does not need to be replaced. If the two values ​​are significantly different, close the ball valve 7 and the gate valve 3 corresponding to the filter 10. Replacing the filter 10 does not affect the use of the barometer 1.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure gauge measuring filter device, characterized in that: include: A barometer (1), wherein two gate valves (3) are connected to the lower end of the barometer (1), a first flange (5) is installed at the lower end of the gate valve (3), and a second flange (6) is installed on the lower surface of the first flange (5); A filter (10) is installed between a first flange (5) and a second flange (6); a ball valve (7) is installed on the lower surface of the second flange (6); and a bellows (12) is connected to the lower end of the ball valve (7).

2. A pressure gauge measuring filter device according to claim 1, characterized in that: The pressure gauge (1) is connected to a first tee (2), and two gate valves (3) are connected to the first tee (2).

3. A pressure gauge measuring filter device according to claim 1, characterized in that: A second tee (8) is connected between the two bellows (12).

4. A pressure gauge measuring filter device according to claim 1, characterized in that: The gate valve (3) is connected to a bent pipe (4), and the bent pipe (4) is fixedly connected to the first flange (5).

5. A pressure gauge measuring filter device according to claim 1, characterized in that: A sealing groove (11) is provided on the surface of the second flange (6), and the filter (10) is placed inside the sealing groove (11); a sealing ring (9) is provided on the lower surface of the first flange (5), and the sealing ring (9) is placed inside the sealing groove (11).

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